CannonKeys DB60 (Daughterboard60) PCB (#8208)

* Cannonkeys DB60 Keyboard

* WhitespacE

* Add ISO and make layer names more idiomatic

* backlight enable

* Remove big backslash from ISO

* Apply suggestions from code review

Co-Authored-By: Ryan <fauxpark@gmail.com>

* Update for correct matrix

* Apply suggestions from code review

Co-Authored-By: James Young <18669334+noroadsleft@users.noreply.github.com>
Co-Authored-By: Ryan <fauxpark@gmail.com>

* Update chibios config files

* Complete VIA keymap

* Remove ugly hack comments

* Update keyboards/cannonkeys/db60/rules.mk

Co-Authored-By: Joel Challis <git@zvecr.com>

Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>
Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/cannonkeys/db60/rules.mk

@@ -0,0 +1,21 @@
+# MCU Name
+MCU = STM32F072
+
+# Build Options
+#   comment out to disable the options.
+#
+BOOTMAGIC_ENABLE = lite # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes   # Mouse keys
+EXTRAKEY_ENABLE = yes   # Audio control and System control
+CONSOLE_ENABLE = yes    # Console for debug
+COMMAND_ENABLE = yes    # Commands for debug and configuration
+SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
+NKRO_ENABLE = yes       # USB Nkey Rollover
+BACKLIGHT_ENABLE = yes
+RGBLIGHT_ENABLE = yes
+WS2812_DRIVER = spi
+
+LAYOUTS = 60_ansi 60_tsangan_hhkb 60_iso
+
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE